PCNE Practice Question: Managing, Monitoring, and Optimising Network Operations
A company wants to optimize costs for egress traffic from Compute Engine instances to the internet. They are considering using Cloud CDN and Private Google Access. Which TWO statements correctly describe how these services can reduce egress costs?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Cloud CDN reduces egress costs by serving cached content from edge locations closer to users.
Cloud CDN caches content at edge locations, reducing the amount of egress from the origin. Private Google Access allows VMs with internal IPs to access Google APIs without using public IPs, thus avoiding internet egress charges for API calls.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Cloud CDN reduces egress costs by serving cached content from edge locations closer to users.
Why this is correct
Correct: CDN reduces origin egress.
- ✗
Cloud CDN requires a global load balancer to function.
Why it's wrong here
Cloud CDN can be used with both global and regional load balancers.
- ✗
Private Google Access eliminates the need for a NAT gateway.
Why it's wrong here
Private Google Access does not replace NAT; it only provides access to Google APIs.
- ✗
Cloud CDN eliminates all egress costs for cached content.
Why it's wrong here
CDN still incurs egress from edge locations to users, though usually at lower rates.
- ✓
Private Google Access reduces egress costs by allowing VMs to access Google APIs using internal IPs, avoiding internet egress charges.
Why this is correct
Correct: API traffic uses Google's internal network, not internet egress.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCNE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCNE exam.